package com.hadoop.gmall.realtime.dws.app;

import com.alibaba.fastjson.JSONObject;
import com.bw.gmall.realtime.common.base.BaseApp;
import com.bw.gmall.realtime.common.bean.TradeSkuOrderBean;
import com.bw.gmall.realtime.common.constant.Constant;
import com.bw.gmall.realtime.common.util.DateFormatUtil;
import com.bw.gmall.realtime.common.util.HbaseUtil;
import org.apache.flink.api.common.eventtime.SerializableTimestampAssigner;
import org.apache.flink.api.common.eventtime.WatermarkStrategy;
import org.apache.flink.api.common.functions.FlatMapFunction;
import org.apache.flink.api.common.functions.MapFunction;
import org.apache.flink.api.common.functions.ReduceFunction;
import org.apache.flink.api.common.functions.RichMapFunction;
import org.apache.flink.api.common.state.MapState;
import org.apache.flink.api.common.state.MapStateDescriptor;
import org.apache.flink.api.common.state.StateTtlConfig;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.api.java.functions.KeySelector;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.datastream.DataStreamSource;
import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.KeyedProcessFunction;
import org.apache.flink.streaming.api.functions.ProcessFunction;
import org.apache.flink.streaming.api.functions.windowing.ProcessWindowFunction;
import org.apache.flink.streaming.api.windowing.assigners.TumblingEventTimeWindows;
import org.apache.flink.streaming.api.windowing.windows.TimeWindow;
import org.apache.flink.util.Collector;
import org.apache.hadoop.hbase.client.Connection;

import java.math.BigDecimal;
import java.time.Duration;

public class DwsTradeSkuOrderWindow extends BaseApp {
    public static void main(String[] args) throws Exception {
        new DwsTradeSkuOrderWindow().start(10029, 4, Constant.DWS_TRADE_SKU_ORDER_WINDOW,Constant.TOPIC_DWD_TRADE_ORDER_DETAIL);
    }
    @Override
    public void handle(StreamExecutionEnvironment env, DataStreamSource<String> stream) {
        // 1.清洗数据
        SingleOutputStreamOperator<JSONObject> etlStream = stream.flatMap(new FlatMapFunction<String, JSONObject>() {
            @Override
            public void flatMap(String s, Collector<JSONObject> collector) throws Exception {
                try {
                    JSONObject jsonObject = JSONObject.parseObject(s);
                    Long ts = jsonObject.getLong("ts");
                    String skuId = jsonObject.getString("sku_id");
                    if (skuId != null && ts != null) {
                        jsonObject.put("ts", ts * 1000);
                        collector.collect(jsonObject);
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
        //2.添加水位线
        SingleOutputStreamOperator<JSONObject> wmStream = etlStream.assignTimestampsAndWatermarks(WatermarkStrategy.<JSONObject>forBoundedOutOfOrderness(Duration.ofSeconds(3)).withTimestampAssigner(new SerializableTimestampAssigner<JSONObject>() {
            @Override
            public long extractTimestamp(JSONObject jsonObject, long l) {
                return jsonObject.getLong("ts");
            }
        }));
        // 3.先分组 校正数据
        SingleOutputStreamOperator<TradeSkuOrderBean> processStream = wmStream.keyBy(new KeySelector<JSONObject, String>() {
            @Override
            public String getKey(JSONObject jsonObject) throws Exception {
                return jsonObject.getString("id");
            }
        }).process(new KeyedProcessFunction<String, JSONObject, TradeSkuOrderBean>() {
            MapState<String, BigDecimal> mapState;

            @Override
            public void open(Configuration parameters) throws Exception {
                MapStateDescriptor<String, BigDecimal> stateDescriptor = new MapStateDescriptor<String, BigDecimal>("order_state", String.class, BigDecimal.class);
                stateDescriptor.enableTimeToLive(StateTtlConfig.newBuilder(Time.seconds(10)).build());
                mapState = getRuntimeContext().getMapState(stateDescriptor);
            }

            @Override
            public void processElement(JSONObject jsonObject, KeyedProcessFunction<String, JSONObject, TradeSkuOrderBean>.Context context, Collector<TradeSkuOrderBean> collector) throws Exception {
//                // 因为有回撤流的影响，所以要校正数据
//                // 200-->300
//                BigDecimal stateOriginalAmount = mapState.get("originalAmount");
//                // 单价
//                // 100
//                // 100
//                BigDecimal orderPrice = jsonObject.getBigDecimal("order_price");
//                // 购买的数量
//                // 2
//                // 3
//                BigDecimal skuNum = jsonObject.getBigDecimal("sku_num");
//                // 原始金额
//                // 200
//                // 300
//                BigDecimal originalAmount = orderPrice.multiply(skuNum);
//                // 往下发
//                BigDecimal oa = BigDecimal.valueOf(0.0f);
//                if (stateOriginalAmount == null){
//                    mapState.put("originalAmount",originalAmount);
//                    oa = originalAmount;// 200
//                }else{
//                    mapState.put("originalAmount",originalAmount);
//                    oa = originalAmount.subtract(stateOriginalAmount);// 100
//                }


                // 取出流的金额
                BigDecimal splitTotalAmount = jsonObject.getBigDecimal("split_total_amount");
                BigDecimal splitActivityAmount = jsonObject.getBigDecimal("split_activity_amount");
                BigDecimal splitCouponAmount = jsonObject.getBigDecimal("split_coupon_amount");

                // 取出购买的数量
                BigDecimal sku_num = jsonObject.getBigDecimal("sku_num");
                // 单机
                BigDecimal orderPrice = jsonObject.getBigDecimal("order_price");

                // 计算原始金额
                BigDecimal originalAmount = orderPrice.multiply(sku_num);

                // 取状态的数据
                BigDecimal split_total_amount = mapState.get("splitTotalAmount");
                BigDecimal split_activity_amount = mapState.get("splitActivityAmount");
                BigDecimal split_coupon_amount = mapState.get("splitCouponAmount");
                BigDecimal original_amount = mapState.get("originalAmount");


                // 如果状态没有 ，默认赋值成0
                split_total_amount = split_total_amount == null ? new BigDecimal(0) : split_total_amount;
                split_activity_amount = split_activity_amount == null ? new BigDecimal(0) : split_activity_amount;
                split_coupon_amount = split_coupon_amount == null ? new BigDecimal(0) : split_coupon_amount;
                original_amount = original_amount == null ? new BigDecimal(0) : original_amount;


                String skuId = jsonObject.getString("sku_id");
                String skuName = jsonObject.getString("sku_name");
                String id = jsonObject.getString("id");
                Long ts = jsonObject.getLong("ts");


                // 往下游发
                collector.collect(TradeSkuOrderBean.builder()
                        .skuId(skuId)
                        .orderDetailId(id)
                        .orderAmount(splitTotalAmount.subtract(split_total_amount))
                        .originalAmount(originalAmount.subtract(original_amount))
                        .activityReduceAmount(splitActivityAmount.subtract(split_activity_amount))
                        .couponReduceAmount(splitCouponAmount.subtract(split_coupon_amount))
                        .skuName(skuName)
                        .ts(ts)
                        .build());


                // 更新状态 把当前的金额存进去
                mapState.put("splitTotalAmount", splitTotalAmount);
                mapState.put("splitActivityAmount", splitActivityAmount);
                mapState.put("splitCouponAmount", splitCouponAmount);
                mapState.put("originalAmount", originalAmount);
            }
        });
        // 分组SKU_ID 开窗 聚合
        SingleOutputStreamOperator<TradeSkuOrderBean> reduceStream = processStream.keyBy(new KeySelector<TradeSkuOrderBean, String>() {
                    @Override
                    public String getKey(TradeSkuOrderBean tradeSkuOrderBean) throws Exception {
                        return tradeSkuOrderBean.getSkuId();
                    }
                }).window(TumblingEventTimeWindows.of(org.apache.flink.streaming.api.windowing.time.Time.seconds(10)))
                .reduce(new ReduceFunction<TradeSkuOrderBean>() {
                    @Override
                    public TradeSkuOrderBean reduce(TradeSkuOrderBean value1, TradeSkuOrderBean value2) throws Exception {
                        value1.setOriginalAmount(value1.getOriginalAmount().add(value2.getOriginalAmount()));
                        value1.setCouponReduceAmount(value1.getCouponReduceAmount().add(value2.getCouponReduceAmount()));
                        value1.setActivityReduceAmount(value1.getActivityReduceAmount().add(value2.getActivityReduceAmount()));
                        value1.setOrderAmount(value1.getOrderAmount().add(value2.getOrderAmount()));
                        return value1;
                    }
                }, new ProcessWindowFunction<TradeSkuOrderBean, TradeSkuOrderBean, String, TimeWindow>() {
                    @Override
                    public void process(String s, ProcessWindowFunction<TradeSkuOrderBean, TradeSkuOrderBean, String, TimeWindow>.Context context, Iterable<TradeSkuOrderBean> iterable, Collector<TradeSkuOrderBean> collector) throws Exception {
                        TimeWindow window = context.window();
                        String start = DateFormatUtil.tsToDateTime(window.getStart());
                        String end = DateFormatUtil.tsToDateTime(window.getStart());
                        TradeSkuOrderBean tradeSkuOrderBean = iterable.iterator().next();
                        tradeSkuOrderBean.setStt(start);
                        tradeSkuOrderBean.setEdt(end);
                        collector.collect(tradeSkuOrderBean);
                    }
                });

        // 关联维度
        SingleOutputStreamOperator<TradeSkuOrderBean> dimStream = reduceStream.map(new RichMapFunction<TradeSkuOrderBean, TradeSkuOrderBean>() {
            Connection connection = null;

            @Override
            public void open(Configuration parameters) throws Exception {
                // 获取Hbase链接
                connection = HbaseUtil.getHbaseConnect();
            }

            @Override
            public void close() throws Exception {
                // 关闭
                HbaseUtil.closeHBaseConn(connection);
            }

            @Override
            public TradeSkuOrderBean map(TradeSkuOrderBean tradeSkuOrderBean) throws Exception {
                String skuId = tradeSkuOrderBean.getSkuId();
                JSONObject dimSkuInfo = HbaseUtil.getCells(connection, Constant.HBASE_NAMESPACE, "dim_sku_info", skuId);
                // 关联SKU
                String skuName = dimSkuInfo.getString("sku_name");
                String c3 = dimSkuInfo.getString("category3_id");
                String tmId = dimSkuInfo.getString("tm_id");
                String spuId = dimSkuInfo.getString("spu_id");
                tradeSkuOrderBean.setSkuName(skuName);
                tradeSkuOrderBean.setCategory3Id(c3);
                tradeSkuOrderBean.setTrademarkId(tmId);
                tradeSkuOrderBean.setTrademarkId(spuId);

                // 关联spu
                JSONObject dimSpuInfo = HbaseUtil.getCells(connection, Constant.HBASE_NAMESPACE, "dim_spu_info", spuId);
                tradeSkuOrderBean.setSpuName(dimSpuInfo.getString("spu_name"));
                // 关联品牌
                JSONObject dimBaseTrademark = HbaseUtil.getCells(connection, Constant.HBASE_NAMESPACE, "dim_base_trademark", tmId);
                tradeSkuOrderBean.setTrademarkName(dimBaseTrademark.getString("tm_name"));
                //关联c3
                JSONObject category3 = HbaseUtil.getCells(connection, Constant.HBASE_NAMESPACE, "dim_base_category3", c3);
                String c2 = category3.getString("category2_id");
                tradeSkuOrderBean.setCategory2Id(c2);
                tradeSkuOrderBean.setCategory3Name(category3.getString("name"));
                //关联c2
                JSONObject category2 = HbaseUtil.getCells(connection, Constant.HBASE_NAMESPACE, "dim_base_category2", c2);
                String c1 = category2.getString("category1_id");
                tradeSkuOrderBean.setCategory1Id(c1);
                tradeSkuOrderBean.setCategory2Name(category2.getString("name"));

                //关联c1
                JSONObject category1 = HbaseUtil.getCells(connection, Constant.HBASE_NAMESPACE, "dim_base_category1", c1);
                tradeSkuOrderBean.setCategory1Name(category1.getString("name"));

                return tradeSkuOrderBean;
            }
        });

        // 写出
        dimStream.print();
    }
}
